ASSEMBLY
TORQUES
The assembly torques given here will assure proper
tightness without danger of stripping threads. Be
careful not to strip th
reads.
.Use
reasonable force only
and a wrench of normal length. •
Specially designed place bolts (Figure 2) do not
require a lockwasher or gasket. Onan uses a-harden-
ed flatwasher under each bolt to.prevent galling or
yielding of bearing plate material..Do not attempt to
use a lockwasher with these bolts; it will defeat their
purpose. Check all studs, nuts, and screwsxrften and
tighten as needed to keep them from working loose.
FIGURE 2. PLACE BOLT
TORQUE SPECIFICATIONS
FT.
LBS.
Connecting Rod Bolt 27-29
Cover-Rocker Box 8-10
Cylinder Head Bolt 44-46
Exhaust Manifold Nuts fl3-1-5
•Flywheel Mounting Screw 65-70
Fuel Pump Mounting Screws 15-20
Gear Case Cover 18-20
Glow Plug 10-15
Injection Nozzle Mounting Screws. ...,20-21
Injection Pump Mounting Screws 18-21
Intake Manifold 13-15
Oil'Base Mounting Screws 32-38
Oil Filter Hand Tighten'+ 1/4 to 1/2 Turn
Oil Pump Mounting Screws 15-20
Rear Bearing Plate 40-45
Rocker Arm Nut *4-10
Rocker Arm Stud 35-40
t - Caution: Tighten nuts evenly to avoid damage.
* - This torque is from friction between the threads only and locks
the nut in place. The rocker arm nuts a're for adjusting valve
lash.
SPECIAL
TOOLS
These tools are available from Onan to aid service and
repair work.
Crankshaft Gear Pulling Ring 420-0275
Diesel Nozzle Tester.' .420-0184
Diesel Pintle Nozzle Cleaning Tool
Set (Includes Injection Nozzle
Centering Tool) 420-0208
Nozzle Centering Sleeve ....- 420-0321
.Delivery Valve Test'Fixture t420-0322
Combination Main and Cam Bearing
Driver 420-0326
•Driver, Valve Seat 420-0270
Oil Seal Guide and Driver -
Bearing Plate 420-0250
Gear Cover 420-0281
Ridge Reamer 420-0260
Replacement Cutter filade
for 420-0260 .420-0261
"Diesel Compression Tester... 420-0283
Valve Seat Remover 420-0311
Replacement Blades for 420-0311 420-0274
Valve Guide Driyer...: 420-0300
t - Used with diesel nozzle tester.
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